I think a woman in a well cut trouser suit - or even trousers with a casual top - can look very sexy. I don't have problems with women wearing trousers - indeed I have experimented wearing them myself in female mode, and liked the results. However, I do agree with others who have commented on the fact that this is a bit of a one-way street; fine for women to wear trousers, but not for men to wear skirts.